Let's divide 91661350 by 78
We want to divide 91661350 by 78.

Going ahead to step 1:
The number 78 fits into 9 0 times, leaving a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 78

Let's proceed to step 2:
The number 78 fits into 91 1 times, leaving a remainder of 13.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 78 from 91 and we're left with 13.
Grab the next digit (6) from the dividend, add it to 13, then carry on: 136 / 78

Going ahead to step 3:
136 divided by 78 is 1 with a remainder of 58.
Use 1 as the next digit of our solution. 
Result so far: 11.0
The remainder is 58 after subtracting 78 from 136.
Grab the next digit (6) from the dividend, add it to 58, then carry on: 586 / 78

Moving on to step 4:
When dividing 586 by 78, we get 7 with a remainder of 40.
Record the quotient 7 as the next digit in the result. 
Result so far: 117.0
Subtract 546 from 586 to get 40.
Include the next digit (1) from the dividend after 40, then repeat: 401 / 78

Let's proceed to step 5:
The number 78 fits into 401 5 times, leaving a remainder of 11.
The next digit of our result is 5. 
Result so far: 1175.0
If we take 390 away from 401, we end up with 11.
Include the next digit (3) from the dividend after 11, then repeat: 113 / 78

Moving on to step 6:
The number 78 fits into 113 1 times, leaving a remainder of 35.
Record the quotient 1 as the next digit in the result. 
Result so far: 11751.0
If we subtract 78 from 113, we get 35.
Append the next digit (5) from the dividend to 35 and continue with: 355 / 78

On to step 7:
When dividing 355 by 78, we get 4 with a remainder of 43.
The next digit of our result is 4. 
Result so far: 117514.0
Deduct 312 from 355 and we're left with 43.
Bring next digit (0) of the dividend behind the 43 and repeat the process: 430 / 78

On to step 8:
If we divide 430 by 78, we get 5 and a remainder of 40.
The next digit of our result is 5. 
Result so far: 1175145.0
If we take 390 away from 430, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 9:
400 divided by 78 is 5 with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 1175145.5
If we subtract 390 from 400, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 10:
100 divided by 78 is 1 with a remainder of 22.
Put 1 as the next digit of the answer. 
Result so far: 1175145.51
Subtract 78 from 100 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 11:
78 can be fit into 220 2 times, resulting in a remainder of 64.
Use 2 as the next digit of our solution. 
Result so far: 1175145.512
The remainder is 64 after subtracting 156 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 12:
78 goes into 640 8 times with a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 1175145.5128
Subtracting 624 from 640 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 13:
If we divide 160 by 78, we get 2 and a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 1175145.51282
Deduct 156 from 160 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 14:
78 can be fit into 40 0 times, resulting in a remainder of 40.
The next digit of our result is 0. 
Result so far: 1175145.51282
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 15:
When dividing 400 by 78, we get 5 with a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 1175145.5128205
If we subtract 390 from 400, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 16:
If we divide 100 by 78, we get 1 and a remainder of 22.
Write down 1 as next digit of the result. 
Result so far: 1175145.51282051
If we subtract 78 from 100, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

The quotient of the division is 1175145.51282051, and the remainder is 2.2e-08.